contrib/llvm/tools/lldb/source/Plugins/SymbolFile/DWARF/DWARFDebugPubnamesSet.h

   1 //===-- DWARFDebugPubnamesSet.h ---------------------------------*- C++ -*-===//
   2 //
   3 //                     The LLVM Compiler Infrastructure
   4 //
   5 // This file is distributed under the University of Illinois Open Source
   6 // License. See LICENSE.TXT for details.
   7 //
   8 //===----------------------------------------------------------------------===//
   9
  10 #ifndef SymbolFileDWARF_DWARFDebugPubnamesSet_h_
  11 #define SymbolFileDWARF_DWARFDebugPubnamesSet_h_
  12
  13 #include "SymbolFileDWARF.h"
  14 #include <string>
  15 #include <vector>
  16 #if __cplusplus >= 201103L
  17 #include <unordered_map>
  18 #else
  19 #include <ext/hash_map>
  20 #endif
  21
  22 class DWARFDebugPubnamesSet
  23 {
  24 public:
  25     struct Header
  26     {
  27         uint32_t    length;     // length of the set of entries for this compilation unit, not including the length field itself
  28         uint16_t    version;    // The DWARF version number
  29         uint32_t    die_offset; // compile unit .debug_info offset
  30         uint32_t    die_length; // compile unit .debug_info length
  31         Header() :
  32             length(10),
  33             version(2),
  34             die_offset(DW_INVALID_OFFSET),
  35             die_length(0)
  36         {
  37         }
  38     };
  39
  40     struct Descriptor
  41     {
  42         Descriptor() :
  43             offset(),
  44             name()
  45         {
  46         }
  47
  48         Descriptor(dw_offset_t the_offset, const char *the_name) :
  49             offset(the_offset),
  50             name(the_name ? the_name : "")
  51         {
  52         }
  53
  54         dw_offset_t offset;
  55         std::string name;
  56     };
  57
  58                 DWARFDebugPubnamesSet();
  59                 DWARFDebugPubnamesSet(dw_offset_t debug_aranges_offset, dw_offset_t cu_die_offset, dw_offset_t die_length);
  60     dw_offset_t GetOffset() const { return m_offset; }
  61     void        SetOffset(dw_offset_t offset) { m_offset = offset; }
  62     DWARFDebugPubnamesSet::Header& GetHeader() { return m_header; }
  63     const DWARFDebugPubnamesSet::Header& GetHeader() const { return m_header; }
  64     const DWARFDebugPubnamesSet::Descriptor* GetDescriptor(uint32_t i) const
  65         {
  66             if (i < m_descriptors.size())
  67                 return &m_descriptors[i];
  68             return NULL;
  69         }
  70     uint32_t    NumDescriptors() const { return m_descriptors.size(); }
  71     void        AddDescriptor(dw_offset_t cu_rel_offset, const char* name);
  72     void        Clear();
  73     bool        Extract(const lldb_private::DataExtractor& debug_pubnames_data, lldb::offset_t *offset_ptr);
  74     void        Dump(lldb_private::Log *s) const;
  75     void        InitNameIndexes() const;
  76     void        Find(const char* name, bool ignore_case, std::vector<dw_offset_t>& die_offset_coll) const;
  77     void        Find(const lldb_private::RegularExpression& regex, std::vector<dw_offset_t>& die_offsets) const;
  78     dw_offset_t GetOffsetOfNextEntry() const;
  79
  80
  81
  82 protected:
  83     typedef std::vector<Descriptor>         DescriptorColl;
  84     typedef DescriptorColl::iterator        DescriptorIter;
  85     typedef DescriptorColl::const_iterator  DescriptorConstIter;
  86
  87
  88     dw_offset_t     m_offset;
  89     Header          m_header;
  90 #if __cplusplus >= 201103L
  91     typedef std::unordered_multimap<const char*, uint32_t, std::hash<const char*>, CStringEqualBinaryPredicate> cstr_to_index_mmap;
  92 #else
  93     typedef __gnu_cxx::hash_multimap<const char*, uint32_t, __gnu_cxx::hash<const char*>, CStringEqualBinaryPredicate> cstr_to_index_mmap;
  94 #endif
  95     DescriptorColl  m_descriptors;
  96     mutable cstr_to_index_mmap m_name_to_descriptor_index;
  97 };
  98
  99 #endif  // SymbolFileDWARF_DWARFDebugPubnamesSet_h_